Sometimes, you might come across a situation where you need to extract text from an image within your Playwright TypeScript project. This could be for various reasons, such as extracting information from screenshots or images generated during test execution. In this guide, we'll explore how to achieve this using Tesseract.js, a popular JavaScript library for Optical Character Recognition (OCR).
Prerequisites
Before you begin, ensure you have the necessary dependencies installed. You'll need Node.js and the Playwright library installed. Additionally, you'll need the Tesseract.js library, which can be installed using the following command:
npm install tesseract.js@2.1.1
Writing Playwright Test Code
Let's assume you have a Playwright test project set up, and you want to extract text from an image within a specific test case. Here's an example of how you can achieve this:
Implementing the Tesseract Code
You've created a separate function to handle the Tesseract OCR process. Here's the implementation for the convertToText function:
This function uses the Tesseract.js library to recognize text from the image and logs the extracted text to the console.
Element screenshot:
Output:
Conclusion
By integrating Tesseract.js with your Playwright TypeScript project, you can easily extract text from images and use it in your test automation scenarios. This capability can be particularly useful when dealing with dynamically generated content in your web application. Remember to handle potential errors during the OCR process to ensure the stability of your test suite.
With these steps, you're well-equipped to extract text from images within your Playwright TypeScript project using Tesseract.js. Happy testing!
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